题型:阅读选择 题类:模拟题 难易度:普通
Have you ever rubbed your hands together when they get cold? Why do we do that? We do that for friction. Friction happens when two things that aren't very smooth (光滑的) rub together to make heat energy. The faster you rub two things together, the more friction you can make. Let' s discover friction!
WHAT YOU'LL NEED:
★Soap ★Water ★Your hands
WHAT TO DO:
★Make sure your hands are dry.
★Rub your hands together until you feel the heat of your hands.
★Now, use soap and water to get your hands very slippery (滑的).
★Try to make friction happen while your hands are slippery.
★Please write down what has happened.
LET'S TALK!
Friction is an energy that happens when two things rub together. When friction happens, it makes heat! When your hands are slippery, they won't make very much friction and your hands won't get so hot.
DID YOU KNOW?
★Friction happens when you stop your fast running bike.
★Ancient people made fires by rubbing two pieces of wood together. Friction happened though they didn't know it. ___ __? Friction is everywhere. Have you ever noticed situations where friction is happening? If not, ask your parents to take you out in a car. If it is not hot, touch the tires (轮胎) of the car before and after a short drive to see how much warmer they get from friction.
Shopping is funny and also makes your money less, but wise customers save money while enjoying shopping. How? Try to ask yourself some questions before buying. Now, let's learn to shop wisely to cut down the shopping cost.
★{#blank#}1{#/blank#}.
Products are usually shown in some special ways to encourage people to buy them. Before you decide to buy something, take a second thought about whether it is necessary for you. If you really need it , just buy it. If not , please leave quickly.{#blank#}2{#/blank#}.
★How to get it cheaper?
{#blank#}3{#/blank#}. For example, when you want a dress in a shop , you can compare it with one in other shops. Or, you can look for a same or a similar one on the Internet , at least in three shops. In this way , you may find that you can get something at a much lower price.
★Are things on sale really good?
{#blank#}4{#/blank#}. They think the prices of them are not high, so they won't cost too much. Therefore , they go back home with many bags of clothes , shoes, and so on. They feel happy and are satisfied(满意的) with their rooms full of new things.{#blank#}5{#/blank#}.
In short, try to do the above things and become a wise customer.
A. If you decide to buy something, try to buy it in a cheaper way. B. Many people may buy something which is on sale. C. In fact , it's a waste of both money and space. D. Do you really need it? E. This can help you get the proper things that you really need. F. We can look for these things on the Internet. G. Shopping on the Internet is not good all the time. |
a the but and for you either example season have get worth |
I paid{#blank#}1{#/blank#} visit to Tunisia(突尼斯)last spring,so I have some suggestions for you. It is really a beautiful country and well{#blank#}2{#/blank#} visiting. There are so many interesting things to see and to do in the country. Of the four{#blank#}3{#/blank#} ,I think spring is the best time to visit the country. I'd like to make a suggestion that you should go there{#blank#}4{#/blank#} in April or in May. People in Tunisia are kind and friendly. When they meet foreign people{#blank#}5{#/blank#} the first time,they usually shake hands to greet each other. When acquaintances(熟人)meet each other,they not only shake hands{#blank#}6{#/blank#} also hug each other.
In Tunisia,you can visit many interesting places and taste different kinds of delicious food. However,while{#blank#}7{#/blank#} are enjoying yourself,you are supposed to behave properly. You need to respect(尊重)the local customs. For{#blank#}8{#/blank#} ,you aren't supposed to eat pork(猪肉).
Finally,don't forget to{#blank#}9{#/blank#} your passport ready before you leave for Tunisia. I hope that you will{#blank#}10{#/blank#} a good time there!
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